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National Semiconductor Electronic Components Datasheet

LM248 Datasheet

Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)

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LM248 pdf
May 1999
LM148/LM248/LM348
Quad 741 Op Amps
LM149
Wide Band Decompensated (AV (MIN) = 5)
General Description
The LM148 series is a true quad 741. It consists of four inde-
pendent, high gain, internally compensated, low power op-
erational amplifiers which have been designed to provide
functional characteristics identical to those of the familiar
741 operational amplifier. In addition the total supply current
for all four amplifiers is comparable to the supply current of a
single 741 type op amp. Other features include input offset
currents and input bias current which are much less than
those of a standard 741. Also, excellent isolation between
amplifiers has been achieved by independently biasing each
amplifier and using layout techniques which minimize ther-
mal coupling. The LM149 series has the same features as
the LM148 plus a gain bandwidth product of 4 MHz at a gain
of 5 or greater.
The LM148 can be used anywhere multiple 741 or 1558 type
amplifiers are being used and in applications where amplifier
matching or high packing density is required.
Features
n 741 op amp operating characteristics
n Low supply current drain: 0.6 mA/Amplifier
n Class AB output stage — no crossover distortion
n Pin compatible with the LM124
n Low input offset voltage: 1 mV
n Low input offset current: 4 nA
n Low input bias current: 30 nA
n Gain bandwidth product
LM148 (unity gain): 1.0 MHz
LM149 (AV 5): 4 MHz
n High degree of isolation between amplifiers: 120 dB
n Overload protection for inputs and outputs
Schematic Diagram
* 1 pF in the LM149
© 1999 National Semiconductor Corporation DS007786
DS007786-1
www.national.com


National Semiconductor Electronic Components Datasheet

LM248 Datasheet

Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)

No Preview Available !

LM248 pdf
Absolute Maximum Ratings (Note 4)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM148/LM149
LM248
LM348
Supply Voltage
±22V
±18V
±18V
Differential Input Voltage
±44V
±36V
±36V
Output Short Circuit Duration (Note 1)
Continuous
Continuous
Continuous
Power Dissipation (Pd at 25˚C) and
Thermal Resistance (θjA), (Note 2)
Molded DIP (N) Pd
θjA
Cavity DIP (J) Pd
θJA
Maximum Junction Temperature (TjMAX)
Operating Temperature Range
Storage Temperature Range
1100 mW
110˚C/W
150˚C
−55˚C TA +125˚C
−65˚C to +150˚C
800 mW
110˚C/W
110˚C
−25˚C TA +85˚C
−65˚C to +150˚C
750 mW
100˚C/W
700 mW
110˚C/W
100˚C
0˚C TA +70˚C
−65˚C to +150˚C
Lead Temperature (Soldering, 10 sec.) Ceramic
300˚C
300˚C
300˚C
Lead Temperature (Soldering, 10 sec.) Plastic
260˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds)
260˚C
260˚C
260˚C
Small Outline Package
Vapor Phase (60 seconds)
215˚C
215˚C
215˚C
Infrared (15 seconds)
220˚C
220˚C
220˚C
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount
devices.
ESD tolerance (Note 5)
500V
500V
500V
Electrical Characteristics
(Note 3)
Parameter
Conditions
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Resistance
Supply Current All Amplifiers
Large Signal Voltage Gain
Amplifier to Amplifier
Coupling
Small Signal Bandwidth
Phase Margin
Slew Rate
Output Short Circuit Current
Input Offset Voltage
Input Offset Current
TA = 25˚C, RS 10 k
TA = 25˚C
TA = 25˚C
TA = 25˚C
TA = 25˚C, VS = ±15V
TA = 25˚C, VS = ±15V
VOUT = ±10V, RL 2 k
TA = 25˚C, f = 1 Hz to 20 kHz
(Input Referred) See Crosstalk
Test Circuit
LM148 Series
TA = 25˚C
LM149 Series
LM148 Series (AV = 1)
TA = 25˚C
LM149 Series (AV = 5)
LM148 Series (AV = 1)
TA = 25˚C
LM149 Series (AV = 5)
TA = 25˚C
RS 10 k
LM148/LM149
LM248
LM348
Min Typ Max Min Typ Max Min Typ Max
1.0 5.0
1.0 6.0
1.0 6.0
4 25
4 50
4 50
30 100
30 200
30 200
0.8 2.5
0.8 2.5
0.8 2.5
2.4 3.6
2.4 4.5
2.4 4.5
50 160
25 160
25 160
Units
mV
nA
nA
M
mA
V/mV
−120
1.0
4.0
60
60
0.5
2.0
25
6.0
75
−120
1.0
4.0
60
60
0.5
2.0
25
7.5
125
−120
dB
1.0 MHz
4.0 MHz
60 degrees
60 degrees
0.5 V/µs
2.0
25
7.5
100
V/µs
mA
mV
nA
www.national.com
2


Part Number LM248
Description Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)
Maker National Semiconductor
Total Page 18 Pages
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